Are you sure that you have no warning like "non-atomic read or write"?
It would be really surprising if the hardware or compiler had bugs on
that kind of basic operation...
Federico Fiorentin a écrit :
Bug In Arithmetic Ops
I'm developing a synchronization algorithm for Tmote Sky in TinyOS2
with a Poller and 2 Clients.
The poller sends periodically a Request Packet, and the clients reply it.
In the Reply packet there's:
the Request Packet receive timestamp (TS) ,
a time value (TV) always inferior the timestamp
and them difference (TS - TV).
I found out that the subtraction evaluated by the mote isn't always
correct, sometimes it diverge of 1,2,4,8.... it seems that the mote
doesn't calculate correctly when it's stressed.
Any suggestion is welcome.
Thanks,Regards.
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